Water uranium enrichment sensing device
By designing a water-enriched uranium-enriched sensing device using solid-phase uranium-enriched scintillation material, the problem of difficulty in detecting and enriching low-level uranium in water is solved in the prior art, efficient uranium enrichment and chemical separation are achieved, and the risks of manual intervention and pollution are reduced.
Patent Information
- Application Number
- CN202420225266.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-01-30
AI Technical Summary
The prior art is difficult to effectively detect and enrich low levels of radionuclide uranium in water, and traditional methods have problems with environmental pollution and high random errors.
A water-enriched uranium-enriched sensing device was designed, using solid-phase uranium-enriched scintillation material. This material was prepared by suspension polymerization and wet spinning technology. It has the characteristics of fast adsorption rate and short adsorption equilibrium time. It converts the adsorbed radionuclide into detectable fluorescence through scintillation agent.
Efficient enrichment and chemical separation of uranium in water are achieved, manual intervention and random errors are reduced, and radioactive contamination is avoided during sample sprinkling and laboratory processing.
Smart Images
Figure CN222850748U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of uranium enrichment sensor devices, and in particular relates to a uranium enrichment sensor device in water. Background Art
[0002] Normally, the uranium content in water is low, and it is difficult to detect by conventional methods, so it is necessary to separate and enrich the uranium nuclides in the water. There are many technologies for separation and enrichment of uranium. Liquid-liquid extraction and solid phase extraction are the most traditional, classic and widely applicable. In addition, there are foam flotation technology, capillary electrophoresis and reversed-phase high-performance liquid chromatography technology. Although there are relevant application reports of foam flotation technology and modified organic and inorganic adsorption materials in the separation and enrichment before uranium analysis, these methods have limited scope of application and analysis efficiency, and are not suitable as conventional analysis methods for uranium. Capillary electrophoresis and reversed-phase high-performance liquid chromatography technology are a type of analytical method based on instrument platforms, which have achieved good results in the separation and determination of uranium and lanthanide elements, but their sensitivity is not high and there is an "extra-column effect".
[0003] Liquid-liquid extraction has the advantages of fast speed, large capacity, strong selectivity and multiple extraction systems to choose from. The equipment is simple, easy to master, applicable to a wide range of uranium concentrations and good separation effect. However, when potential toxic organic matter enters the environment during the extraction process, it will cause environmental pollution. Solid phase extraction is the fastest-growing separation and enrichment technology in recent years. Compared with liquid-liquid extraction, its biggest advantages are that the extractant can be regenerated and reused, the enrichment multiple is high and the pollution to the environment is less. Compared with solvent extraction, the disadvantage of ion exchange is that it is slower and has poorer selectivity. Ion-imprinted polymers are a new type of uranium adsorption material that has been reported more frequently abroad in recent years, but their selectivity for uranyl ions and acidity need to be improved. Utility Model Content
[0004] The utility model aims to provide a uranium enrichment sensor device in water, which is suitable for the enrichment and sensing of low-level radioactive nuclide uranium in water.
[0005] The technical scheme of the utility model is as follows: a uranium enrichment sensor device in water, comprising a polyfluoroethylene end cap, a hose connector, a sealing pressure plate, an organic glass translucent body, a circular groove, a quartz glass tube, a luminous wire bracket, an O-type sealing ring, an enriched scintillation material and a circular through hole, wherein the enriched scintillation material is fixed by the luminous wire bracket, the luminous wire bracket is arranged in the center of the quartz glass tube, both ends of the quartz glass tube are sealed by O-type sealing rings, the O-type sealing rings are pressed by the polyfluoroethylene end caps, both ends of the polyfluoroethylene end caps are connected to the hose connectors, the quartz glass tube is placed in the organic glass translucent body, and the organic glass translucent body is pressed by sealing pressure plates above and below.
[0006] Preferably, the organic glass light-transmitting body has a circular through hole inside, and the quartz glass tube is placed in the circular through hole inside the organic glass light-transmitting body.
[0007] Preferably, the enriched scintillating material is prepared by suspension polymerization and wet spinning process using magnetic amidoxime-modified chitosan as a carrier, diphenyloxazole and 1,4-bis(4-methyl-5-phenyloxazole)benzene as scintillating materials, and is in the shape of filaments.
[0008] Preferably, the luminous wire bracket is made of a material with high structural strength and low radioactive background, and has eight sectors in total.
[0009] Preferably, the organic glass light-transmitting body is a cube processed from organic glass, with a through hole in the center, circular grooves processed on two symmetrical sides, and the light-proof portions of the six outer surfaces are aluminum-plated.
[0010] Preferably, the sealing pressure plate is made of aluminum alloy.
[0011] Preferably, the exterior of the organic glass light-transmitting body is provided with a stainless steel shell which is sealed and wrapped with a certain thickness of lead.
[0012] The beneficial effects of the utility model are as follows: the uranium enrichment scintillating material proposed in the utility model is a solid-phase material, which has the dual functions of enrichment and scintillation; the uranium enrichment scintillating material uses multi-walled carbon nanotubes and chitosan as the basis of uranium enrichment agents, which has the advantages of fast adsorption rate, short adsorption equilibrium time, and functional groups that are easier to polymerize with scintillators. The enriched scintillating material can not only enrich the low-level radioactive nuclides of interest in water into the microcolumn to achieve the concentration and chemical separation of the nuclides, but also can convert the α particles emitted by the adsorbed radioactive nuclides into detectable fluorescence through polymerized or mixed scintillators (bodies), thereby replacing the sample collection, manual transportation, sample pretreatment, and source preparation links, and realizing the on-site source preparation of α radioactive nuclides in water. It can effectively reduce manual intervention, reduce random errors, and solve the problem of radioactive contamination to operators and the environment caused by careless sample spillage during manual transportation of water samples and secondary waste liquid generated during laboratory sample processing. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the overall structure of a water uranium enrichment sensor device provided by the utility model;
[0014] Figure 2 Main view of the structure for enriching the scintillating material;
[0015] Figure 3 A top view of a structure for enriching scintillation materials;
[0016] Figure 4 This is the left view of the organic glass light-transmitting body;
[0017] Figure 5 This is the front view of the organic glass transparent body;
[0018] Figure 6 It is a top view of the organic glass translucent body.
[0019] In the figure: 1 is a polytetrafluoroethylene end cap, 2 is a hose connector, 3 is a sealing pressure plate, 4 is an organic glass light-transmitting body, 5 is a circular groove, 6 is a quartz glass tube, 7 is a luminous wire bracket, 8 is an O-ring, 9 is an enriched scintillation material, and 10 is a circular through hole. DETAILED DESCRIPTION
[0020] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0021] like Figure 1 The sensor device for uranium enrichment in water includes a polytetrafluoroethylene end cap 1, a hose connector 2, a sealing plate 3, an organic glass transparent body 4, a circular groove 5, a quartz glass tube 6, a luminous wire bracket 7, an O-ring 8, an enriched scintillation material 9 and a circular through hole 10. The enriched scintillation material 9 is fixed by the luminous wire bracket 7. Figure 2 and 3 As shown, the cross-section of the luminous wire bracket 7 is I-shaped, and its upper and lower parts are respectively M-shaped frames, and the upper and lower structures are connected by a rod-shaped part. The luminous wire bracket 7 is located in the center of the quartz glass tube 6, and the two ends of the quartz glass tube 6 are sealed by O-rings 8, and the O-rings 8 are pressed by polytetrafluoroethylene end caps 1. The two ends of the polytetrafluoroethylene end caps 1 are connected to hose connectors 2. The organic glass translucent body 4 has a circular through hole 10 inside. The above combination is placed in the circular through hole 10 inside the organic glass translucent body 4. The organic glass translucent body 4 is pressed with sealing pressure plates 3 on the top and bottom, and circular grooves 5 are opened on the left and right sides of the organic glass translucent body 4.
[0022] In this embodiment, preferably, the enriched scintillating material 9 is prepared by suspension polymerization and wet spinning process using magnetic amidoxime-modified chitosan as a carrier, diphenyloxazole and 1,4-bis(4-methyl-5-phenyloxazole)benzene as scintillating materials, and has a filamentous shape.
[0023] In this embodiment, preferably, the luminous wire bracket 7 is made of a material with high structural strength and low radioactive background, and has eight sectors in total.
[0024] In this embodiment, preferably, the organic glass light-transmitting body 4 is a cube processed from organic glass, with a central through hole, circular grooves processed on two symmetrical sides, and the light-shielding portions of the six outer surfaces are aluminum-plated.
[0025] In this embodiment, preferably, the sealing pressure plate 3 is made of aluminum alloy.
[0026] In this embodiment, preferably, the device is designed to be columnar.
[0027] In this embodiment, preferably, the enriched scintillating material 9 is installed in a quartz glass tube 6 parallel to the axial direction of the liquid flow direction, and the prepared fibrous filament-shaped enriched scintillating material 9 is wound on the luminous wire support 7 in a certain way to achieve effective fixation of the material. The amount of enriched scintillating material 9 is comprehensively determined by the sensitive volume, adsorption efficiency, adsorption equilibrium amount, etc. of the device, and its quantitative value is characterized by mass. The effect after fixation is as follows Figure 2 shown.
[0028] In this embodiment, preferably, considering that the liquid is acidic and the acid resistance of organic glass is relatively weak, a quartz glass tube 6 is used in the center to isolate the acid liquid, and O-ring seals 8 and polytetrafluoroethylene end caps 1 are used to seal the two ends of the quartz glass tube 6, and the sealing pressure plate 3 is pressed tightly, which can completely isolate the acid liquid from the organic glass translucent body and improve the corrosion resistance.
[0029] In this embodiment, in order to further shield the environmental gamma rays, the device is sealed with a stainless steel shell and wrapped with a certain thickness of lead.
[0030] It should be noted that the utility model is a uranium enrichment sensor device in water. When the uranium enrichment sensor device in water is used, the water sample is first pumped into the uranium enrichment sensor device in water through the hose connector 2. When the activity concentration of the radioactive nuclides in the water sample flowing into the uranium enrichment sensor device in water is equal to the activity concentration of the radioactive nuclides flowing out of the uranium enrichment sensor device in water, the radioactive nuclides adsorbed on the uranium enrichment sensor device in water reach an adsorption equilibrium with the radioactive nuclides in the water body, and the uranium enrichment sensor device in water no longer adsorbs radioactive nuclides. At the same time, after the water sample containing uranium nuclides is enriched online by the uranium enrichment sensor device in water, the emitted α particles lose part or all of their energy to ionize and excite the molecules or atoms of the scintillator, and the excited atoms and molecules emit fluorescence when de-excited, thus realizing the on-site source of α radioactive nuclides in water.
[0031] The uranium enrichment scintillating material proposed in the uranium enrichment sensor device in water is a solid-phase material with dual functions of enrichment and scintillation; the uranium enrichment scintillating material uses multi-walled carbon nanotubes and chitosan as the basis for uranium enrichment agents, which have the advantages of fast adsorption rate, short adsorption equilibrium time, and functional groups that are easier to polymerize with scintillators. The enriched scintillating material can not only enrich the low-level radioactive nuclides of interest in water into the microcolumn to achieve the concentration and chemical separation of the nuclides, but also can convert the α particles emitted by the adsorbed radioactive nuclides into detectable fluorescence through polymerized or mixed scintillators (bodies), thereby replacing the sample collection, manual transportation, sample pretreatment, and source preparation links, and realizing the on-site source preparation of α radioactive nuclides in water. It can effectively reduce manual intervention, reduce random errors, and solve the problem of radioactive contamination to operators and the environment caused by careless sample spillage during manual transportation of water samples and secondary waste liquid generated during laboratory sample processing.
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that modifications to the technical solutions described in the aforementioned embodiments, or equivalent replacement of some or all of the technical features therein, do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A uranium enrichment sensor device in water, characterized in that: It includes a polyfluoro end cap, a hose connector, a sealing pressure plate, an organic glass translucent body, a circular groove, a quartz glass tube, a luminous wire bracket, an O-type sealing ring, an enriched scintillation material and a circular through hole. The enriched scintillation material is fixed by the luminous wire bracket, and the luminous wire bracket is arranged in the center of the quartz glass tube. Both ends of the quartz glass tube are sealed by O-type sealing rings, and the O-type sealing rings are pressed by the polyfluoro end caps. Both ends of the polyfluoro end caps are connected to the hose connectors. The quartz glass tube is placed in the organic glass translucent body, and the organic glass translucent body is pressed by sealing pressure plates above and below.
2. A uranium enrichment sensor device in water as claimed in claim 1, characterized in that: The organic glass light-transmitting body has a circular through hole inside, and the quartz glass tube is placed in the circular through hole inside the organic glass light-transmitting body.
3. A uranium enrichment sensor device in water as claimed in claim 1, characterized in that: The luminous wire bracket is made of a material with high structural strength and low radioactive background, and has eight sectors in total.
4. A uranium enrichment sensor device in water as claimed in claim 1, characterized in that: The organic glass light-transmitting body is a cube processed from organic glass, with a through hole in the center, circular grooves processed on two symmetrical sides, and aluminum-plated parts on the six outer surfaces that need to be shielded from light.
5. A uranium enrichment sensor device in water as claimed in claim 1, characterized in that: The sealing pressing plate is made of aluminum alloy.
6. A uranium enrichment sensor device in water as claimed in claim 1, characterized in that: The exterior of the organic glass light-transmitting body is provided with a stainless steel shell for sealing and wrapped with lead of a certain thickness.